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Date: Mon, 29 Apr 2013 20:22:07 +0200
From: Pablo Neira Ayuso <pablo@...filter.org>
To: netfilter-devel@...r.kernel.org
Cc: davem@...emloft.net, netdev@...r.kernel.org
Subject: [PATCH 01/18] netfilter: ipset: Make possible to test elements marked with nomatch
From: Jozsef Kadlecsik <kadlec@...ckhole.kfki.hu>
Signed-off-by: Jozsef Kadlecsik <kadlec@...ckhole.kfki.hu>
Signed-off-by: Pablo Neira Ayuso <pablo@...filter.org>
---
include/linux/netfilter/ipset/ip_set.h | 8 ++++++++
net/netfilter/ipset/ip_set_hash_ipportnet.c | 14 ++++++++------
net/netfilter/ipset/ip_set_hash_net.c | 14 ++++++++------
net/netfilter/ipset/ip_set_hash_netiface.c | 14 ++++++++------
net/netfilter/ipset/ip_set_hash_netport.c | 14 ++++++++------
5 files changed, 40 insertions(+), 24 deletions(-)
diff --git a/include/linux/netfilter/ipset/ip_set.h b/include/linux/netfilter/ipset/ip_set.h
index 7958e84..9701871 100644
--- a/include/linux/netfilter/ipset/ip_set.h
+++ b/include/linux/netfilter/ipset/ip_set.h
@@ -200,6 +200,14 @@ ip_set_eexist(int ret, u32 flags)
return ret == -IPSET_ERR_EXIST && (flags & IPSET_FLAG_EXIST);
}
+/* Match elements marked with nomatch */
+static inline bool
+ip_set_enomatch(int ret, u32 flags, enum ipset_adt adt)
+{
+ return adt == IPSET_TEST &&
+ ret == -ENOTEMPTY && ((flags >> 16) & IPSET_FLAG_NOMATCH);
+}
+
/* Check the NLA_F_NET_BYTEORDER flag */
static inline bool
ip_set_attr_netorder(struct nlattr *tb[], int type)
diff --git a/net/netfilter/ipset/ip_set_hash_ipportnet.c b/net/netfilter/ipset/ip_set_hash_ipportnet.c
index 10a30b4..b4836c8 100644
--- a/net/netfilter/ipset/ip_set_hash_ipportnet.c
+++ b/net/netfilter/ipset/ip_set_hash_ipportnet.c
@@ -279,10 +279,10 @@ hash_ipportnet4_uadt(struct ip_set *set, struct nlattr *tb[],
timeout = ip_set_timeout_uget(tb[IPSET_ATTR_TIMEOUT]);
}
- if (tb[IPSET_ATTR_CADT_FLAGS] && adt == IPSET_ADD) {
+ if (tb[IPSET_ATTR_CADT_FLAGS]) {
u32 cadt_flags = ip_set_get_h32(tb[IPSET_ATTR_CADT_FLAGS]);
if (cadt_flags & IPSET_FLAG_NOMATCH)
- flags |= (cadt_flags << 16);
+ flags |= (IPSET_FLAG_NOMATCH << 16);
}
with_ports = with_ports && tb[IPSET_ATTR_PORT_TO];
@@ -292,7 +292,8 @@ hash_ipportnet4_uadt(struct ip_set *set, struct nlattr *tb[],
data.ip = htonl(ip);
data.ip2 = htonl(ip2_from & ip_set_hostmask(data.cidr + 1));
ret = adtfn(set, &data, timeout, flags);
- return ip_set_eexist(ret, flags) ? 0 : ret;
+ return ip_set_enomatch(ret, flags, adt) ? 1 :
+ ip_set_eexist(ret, flags) ? 0 : ret;
}
ip_to = ip;
@@ -610,15 +611,16 @@ hash_ipportnet6_uadt(struct ip_set *set, struct nlattr *tb[],
timeout = ip_set_timeout_uget(tb[IPSET_ATTR_TIMEOUT]);
}
- if (tb[IPSET_ATTR_CADT_FLAGS] && adt == IPSET_ADD) {
+ if (tb[IPSET_ATTR_CADT_FLAGS]) {
u32 cadt_flags = ip_set_get_h32(tb[IPSET_ATTR_CADT_FLAGS]);
if (cadt_flags & IPSET_FLAG_NOMATCH)
- flags |= (cadt_flags << 16);
+ flags |= (IPSET_FLAG_NOMATCH << 16);
}
if (adt == IPSET_TEST || !with_ports || !tb[IPSET_ATTR_PORT_TO]) {
ret = adtfn(set, &data, timeout, flags);
- return ip_set_eexist(ret, flags) ? 0 : ret;
+ return ip_set_enomatch(ret, flags, adt) ? 1 :
+ ip_set_eexist(ret, flags) ? 0 : ret;
}
port = ntohs(data.port);
diff --git a/net/netfilter/ipset/ip_set_hash_net.c b/net/netfilter/ipset/ip_set_hash_net.c
index d6a5915..6dbe0af 100644
--- a/net/netfilter/ipset/ip_set_hash_net.c
+++ b/net/netfilter/ipset/ip_set_hash_net.c
@@ -225,16 +225,17 @@ hash_net4_uadt(struct ip_set *set, struct nlattr *tb[],
timeout = ip_set_timeout_uget(tb[IPSET_ATTR_TIMEOUT]);
}
- if (tb[IPSET_ATTR_CADT_FLAGS] && adt == IPSET_ADD) {
+ if (tb[IPSET_ATTR_CADT_FLAGS]) {
u32 cadt_flags = ip_set_get_h32(tb[IPSET_ATTR_CADT_FLAGS]);
if (cadt_flags & IPSET_FLAG_NOMATCH)
- flags |= (cadt_flags << 16);
+ flags |= (IPSET_FLAG_NOMATCH << 16);
}
if (adt == IPSET_TEST || !tb[IPSET_ATTR_IP_TO]) {
data.ip = htonl(ip & ip_set_hostmask(data.cidr));
ret = adtfn(set, &data, timeout, flags);
- return ip_set_eexist(ret, flags) ? 0 : ret;
+ return ip_set_enomatch(ret, flags, adt) ? 1 :
+ ip_set_eexist(ret, flags) ? 0 : ret;
}
ip_to = ip;
@@ -466,15 +467,16 @@ hash_net6_uadt(struct ip_set *set, struct nlattr *tb[],
timeout = ip_set_timeout_uget(tb[IPSET_ATTR_TIMEOUT]);
}
- if (tb[IPSET_ATTR_CADT_FLAGS] && adt == IPSET_ADD) {
+ if (tb[IPSET_ATTR_CADT_FLAGS]) {
u32 cadt_flags = ip_set_get_h32(tb[IPSET_ATTR_CADT_FLAGS]);
if (cadt_flags & IPSET_FLAG_NOMATCH)
- flags |= (cadt_flags << 16);
+ flags |= (IPSET_FLAG_NOMATCH << 16);
}
ret = adtfn(set, &data, timeout, flags);
- return ip_set_eexist(ret, flags) ? 0 : ret;
+ return ip_set_enomatch(ret, flags, adt) ? 1 :
+ ip_set_eexist(ret, flags) ? 0 : ret;
}
/* Create hash:ip type of sets */
diff --git a/net/netfilter/ipset/ip_set_hash_netiface.c b/net/netfilter/ipset/ip_set_hash_netiface.c
index f2b0a3c..2481620 100644
--- a/net/netfilter/ipset/ip_set_hash_netiface.c
+++ b/net/netfilter/ipset/ip_set_hash_netiface.c
@@ -396,13 +396,14 @@ hash_netiface4_uadt(struct ip_set *set, struct nlattr *tb[],
u32 cadt_flags = ip_set_get_h32(tb[IPSET_ATTR_CADT_FLAGS]);
if (cadt_flags & IPSET_FLAG_PHYSDEV)
data.physdev = 1;
- if (adt == IPSET_ADD && (cadt_flags & IPSET_FLAG_NOMATCH))
- flags |= (cadt_flags << 16);
+ if (cadt_flags & IPSET_FLAG_NOMATCH)
+ flags |= (IPSET_FLAG_NOMATCH << 16);
}
if (adt == IPSET_TEST || !tb[IPSET_ATTR_IP_TO]) {
data.ip = htonl(ip & ip_set_hostmask(data.cidr));
ret = adtfn(set, &data, timeout, flags);
- return ip_set_eexist(ret, flags) ? 0 : ret;
+ return ip_set_enomatch(ret, flags, adt) ? 1 :
+ ip_set_eexist(ret, flags) ? 0 : ret;
}
if (tb[IPSET_ATTR_IP_TO]) {
@@ -704,13 +705,14 @@ hash_netiface6_uadt(struct ip_set *set, struct nlattr *tb[],
u32 cadt_flags = ip_set_get_h32(tb[IPSET_ATTR_CADT_FLAGS]);
if (cadt_flags & IPSET_FLAG_PHYSDEV)
data.physdev = 1;
- if (adt == IPSET_ADD && (cadt_flags & IPSET_FLAG_NOMATCH))
- flags |= (cadt_flags << 16);
+ if (cadt_flags & IPSET_FLAG_NOMATCH)
+ flags |= (IPSET_FLAG_NOMATCH << 16);
}
ret = adtfn(set, &data, timeout, flags);
- return ip_set_eexist(ret, flags) ? 0 : ret;
+ return ip_set_enomatch(ret, flags, adt) ? 1 :
+ ip_set_eexist(ret, flags) ? 0 : ret;
}
/* Create hash:ip type of sets */
diff --git a/net/netfilter/ipset/ip_set_hash_netport.c b/net/netfilter/ipset/ip_set_hash_netport.c
index 349deb6..57b0550 100644
--- a/net/netfilter/ipset/ip_set_hash_netport.c
+++ b/net/netfilter/ipset/ip_set_hash_netport.c
@@ -272,16 +272,17 @@ hash_netport4_uadt(struct ip_set *set, struct nlattr *tb[],
with_ports = with_ports && tb[IPSET_ATTR_PORT_TO];
- if (tb[IPSET_ATTR_CADT_FLAGS] && adt == IPSET_ADD) {
+ if (tb[IPSET_ATTR_CADT_FLAGS]) {
u32 cadt_flags = ip_set_get_h32(tb[IPSET_ATTR_CADT_FLAGS]);
if (cadt_flags & IPSET_FLAG_NOMATCH)
- flags |= (cadt_flags << 16);
+ flags |= (IPSET_FLAG_NOMATCH << 16);
}
if (adt == IPSET_TEST || !(with_ports || tb[IPSET_ATTR_IP_TO])) {
data.ip = htonl(ip & ip_set_hostmask(data.cidr + 1));
ret = adtfn(set, &data, timeout, flags);
- return ip_set_eexist(ret, flags) ? 0 : ret;
+ return ip_set_enomatch(ret, flags, adt) ? 1 :
+ ip_set_eexist(ret, flags) ? 0 : ret;
}
port = port_to = ntohs(data.port);
@@ -561,15 +562,16 @@ hash_netport6_uadt(struct ip_set *set, struct nlattr *tb[],
timeout = ip_set_timeout_uget(tb[IPSET_ATTR_TIMEOUT]);
}
- if (tb[IPSET_ATTR_CADT_FLAGS] && adt == IPSET_ADD) {
+ if (tb[IPSET_ATTR_CADT_FLAGS]) {
u32 cadt_flags = ip_set_get_h32(tb[IPSET_ATTR_CADT_FLAGS]);
if (cadt_flags & IPSET_FLAG_NOMATCH)
- flags |= (cadt_flags << 16);
+ flags |= (IPSET_FLAG_NOMATCH << 16);
}
if (adt == IPSET_TEST || !with_ports || !tb[IPSET_ATTR_PORT_TO]) {
ret = adtfn(set, &data, timeout, flags);
- return ip_set_eexist(ret, flags) ? 0 : ret;
+ return ip_set_enomatch(ret, flags, adt) ? 1 :
+ ip_set_eexist(ret, flags) ? 0 : ret;
}
port = ntohs(data.port);
--
1.7.10.4
--
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